[(xy+3)(xy-3)-2xy]÷xy
答案:2 悬赏:30 手机版
解决时间 2021-03-22 08:10
- 提问者网友:骨子里的高雅
- 2021-03-21 16:08
[(xy+3)(xy-3)-2xy]÷xy
最佳答案
- 五星知识达人网友:轻熟杀无赦
- 2021-03-21 17:29
[(xy+3)(xy-3)-2xy]÷xy
=[(xy+3)(xy-3)-2xy]/(xy)
=[(xy)^2-2xy-9]/(xy)
= xy -2 - [9/(xy)]
=[(xy+3)(xy-3)-2xy]/(xy)
=[(xy)^2-2xy-9]/(xy)
= xy -2 - [9/(xy)]
全部回答
- 1楼网友:青尢
- 2021-03-21 18:01
[(xy+3)(xy-3)-2xy]÷xy
=(x²y²-3²-2xy)÷xy
=xy-9/xy-2
=(x²y²-3²-2xy)÷xy
=xy-9/xy-2
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